Car-door.



W. P. MURPHY.

CAR nooR.

APPLICATION FlLED DEC. 27, 1913. 1,151,375.. Patented Aug. 24, 1915.-

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fr G l'- 5 Gwumom I Wolter P. Murphy Patentedl Aug. 24

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W. P. MURPHY.

CAR DOOR.

APPLICATION H LED oc.27. 191s.

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Patenten aug. sa, isis.

` l Application filed December 27, 1913.' Serial No. 809,027.

. To'all 'whom tlmay cantera;

VBe it known `that I, WALTER P. MURPHY,

a citizen of the United States, residing at Chicago, in the county `of Cook andv State of illinois, have invented certain new and useful Improvements in CarDoors, of: which the following` is i a specification.

In the drawings: Figure l isa perspective;

view of a car door embodying my invention. F ig. 2 is a sectional view of the section on the line 2 2, Fig. llooking in the direction of vthe arrow. Fig. 3 is a sectional view on liti the line' 3 3, Fig. l, looking in the direction of the arrow. Fig. l is a rear perspective view of the plates of my improved door detached; Fig. 5 is a .vertical sectionalview on the line 5-5, Fig. 1,'looking in the direc-v tion of the arrow. Fig. 6 is a Yview similar to Fig. 5 `omitting thel longitudinal rib or corrugation.

The doors of freight carsare subjected to very rough'usage and are. a source of considerable expense to railroads in the matter of repairs and replacements. l. The principal object of myinvention is to construct a metal car door from a plurality Hof pieces of metal, each piece being reinforced or stiened by means of ribs or corrugations, thereby providing an inexpensive simple and strong construction of door, which 'can be readily utilized in connection with, an ordinary wooden car as well as in y connection with an all metal car.v

A' further object of my invention is to Construct a metal car door of sections, each of which is alike, that is to say the sections j are duplicates, .for kall intents and purposes,

' thus making it-po'ssible to use one.l 'diel in dii stamping up the sections and reducing the number orepair parts carried at repairv stations along the line. By forming ribs or corrugations onl the sections l amenabled to use a thinner metal which results in a lighter door withoutsacrificing the eiciency off the door; v'and ,with theseand minor .objects in view my inventionl consists of the l `parts and combinationl of parts'4 as vwill'be" hereinafter more fully pointed out..

in the construction illustrated my im- Aprovedinetal car doorl is composed of a plus rality of sections 1,- and2, the marginal edges l of each of which *are bent rearwardly jto-'zingf the action of rust around theheads 'of form a rearwardly projecting marginal flange 3 and 4 which constitute,i n'edect,

marginal stidening ribs.. |llhe fourth-marginal edge of each section terminates in the plane ofthe body of the section.

. rlhe section yl is provided near its fourt marginal edge with a rib or corrugation' extending longitudinally nearly the width of the section and constitutes in eii'ect a transverse beam which materially stift'ens and strengthens the door without adding to the weight of the door; the side marginal edge of the section adjacent this rib being, as above stated in the'plane of the body of -the section as more clearly shown'in Fig. 5.

Each section is pressed' with diagonally vdisposed corrugations or ribs -6 which are shown as crossing each other on the respec-k,

tive sections and forming a star like figure.

Abovef and below these star like figures are -formed, longitudinally disposed ribs or corlike figures are formed a series-of vertically disposed ribs or corrugations 8. The longitudinally disposed ribs or corrugations 7 coact/ with the. diagonally disposed ribs or corrugations in strengthening the sections in their longitudinal dimension, while the ver-I- tical ribs or corrugationsl coact with the diagonal ribs in strengthening the sections in their vertical dimension. It will be noted that all of the ribs Aor corrugations formed in the body of the section terminate short of the marginal edges of the sections.

`- The side marginal flanges of one of the sections terminate short of the 'said'fourth marginal edge of the section as indicated at 9jas shown in Figs. 1 and 4: in order that the said fourthmarginal edge may overlap the fourthmarginal edge of the other section-as the door but also serves as .a water shedv whereby water is shed from the upper part of the-` door'before' it reaches the joint between the sections, thereby materially reducthe'rivets 10.

rugations 7 while on each side of the star shown -in Figs. 1, 5f and 6 whereby said f bodyingithe same construction as that'shown in the other figures with the exception of the beam 5 which is omitted. yBy forming the car door in sections a considerable Saving is effected inthe initial cost By disposing the ribsv or corrugations as' i shown, any force tending to distort the door will be distributed over a large area o the sections and not applied at any one point thereof. By using the oppositely disposed diagonal, longitudinal, and vertical corrugations or ribs I thereby secure an area which includes transverse and longitudinal lines of corrugations aswell as jcorrugations directed at angles therebetween,

I claim: i l 1. A metal car door comprising two sections, loverlapping at their adjacent-edges, the overlapping marginal edge portion of one of the sections being formed with a. lon` gitudinal eorrugation terminating 1n a flange in the same plane as the body of the section, said cor-rugation and iiange overlapping the other section.

2. A metal carv door comprising two sec-i' tions each having three marginal edges bent inwardly at right angles, the fourth marginal edge. of one of said sections being formed with a longitudinal ,corrugation terminating in a ange in the same plane as the body of the section, said corrugation and ange overlapping Ythe other section, said sections being secured together at said iange and'at the opposite side of said corrugation.

In testimony whereof IaiiX my signature in presence of two witnesses. i

\ WALTER P. MURrHY.

VVitnesses:v

P. F. MSHANE, J osEPmNn HARTWELL. 

